Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 445/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 32.52 (826) | 6.87 (174.4) 26.8% |
| Width inches (mm) | 6.5 (165) | 17.52 (445) | 11.02 (280) 169.7% |
| Circum. inches (mm) | 80.59 (2047.06) | 102.16 (2594.96) | 21.57 (547.89) 26.8% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 8.76 (222.5) | 3.43 (87.2) 64.4% |
| Revolutions per mile (km) | 786.17 (488.5) | 620.18 (385.36) | -165.99 (-103.14) -21.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.35 mph (40.8 km/h) |
| 25 mph (40.23 km/h) | 31.69 mph (51 km/h) |
| 30 mph (48.28 km/h) | 38.03 mph (61.2 km/h) |
| 35 mph (56.33 km/h) | 44.37 mph (71.4 km/h) |
| 40 mph (64.37 km/h) | 50.71 mph (81.6 km/h) |
| 45 mph (72.42 km/h) | 57.04 mph (91.8 km/h) |
| 50 mph (80.47 km/h) | 63.38 mph (102 km/h) |
| 55 mph (88.51 km/h) | 69.72 mph (112.2 km/h) |
| 60 mph (96.56 km/h) | 76.06 mph (122.41 km/h) |
| 65 mph (104.61 km/h) | 82.4 mph (132.61 km/h) |
| 70 mph (112.65 km/h) | 88.74 mph (142.81 km/h) |
| 75 mph (120.7 km/h) | 95.07 mph (153.01 km/h) |
| 80 mph (128.75 km/h) | 101.41 mph (163.21 km/h) |
| 85 mph (136.79 km/h) | 107.75 mph (173.41 km/h) |
| 90 mph (144.84 km/h) | 114.09 mph (183.61 km/h) |
| 95 mph (152.89 km/h) | 120.43 mph (193.81 km/h) |
| 100 mph (160.93 km/h) | 126.76 mph (204.01 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1578 | 1833 | 1974 | 2062 | 2156 | 2223 | 2297 | 2384 | 2505 | 2626 | 2760 | 2868 | 3062 | 3277 | 3445 | 3553 | 3613 | 3835 | 4144 | 4815 |
Better Fuel Economy Factory Ratios Increased Power
